While on the street in surveillance service, Kehweiler finds a fragment of human bone on the ground. A lost track inside the city. Apparently definitively. And yet Kehlweiler will follow her, with the two helpers of him. He will follow her with obstinacy and obsession until you reach a small village of Brittany. He finds a collector of typewriting machines, fanatic of any well-oiled mechanism, a parmed and unstooded mayor who does not want problems, a fiercely racist policeman, ready to everything to become mayor he. With the patience and cold ferocity of the detector, Kehlweiler removes the mask to everyone and reconstructs the story, its follies, the monstrosities of him. Chasing tracks.